slyder



110 Modelg) 3 Sheets- Sheet 2. '1

1 W. J. SLYDER.

SAFETY GATE FOR ELEVATORS. No. 519,139. Patented May 1,1894.

WITNESSES: INVENTOR ATTORN EYJ No Model.) 3 Sheets-Sheet 3.

W. J. SLYDER. I SAPETIGATE FOR ELEVATORS. v No. 519,139. Patented May 1,1894.

ATTORNEY THE NATIONAL LITNOGRAPHNG COMPANY- wnnmavon. 0. c4

UNITED STATES WILLIAM J. SLYDER, OF TROY, oHIo,AssIeNoR or ONE-HALF- TO CHARLES PATENT OFFIcn.

KESSLER, or sAMnPL oE.

SAFETY-GATE FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 519,139, dated May 1,189t.

Application filed January 29, 1394:. Serial No. 498,323- (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM J. SLYDER, a citizen of the United States, residing at Troy, in the'county of Miami and State of Ohio,

have invented certain new and useful Improvements in Safety-Gates for Elevators, of which the following is a specification.

My invention relates to improvements in devices for operating safety gates for elevators; and the object of my invention is to provide a device of simple construction by which gates at hatch-ways of elevators will be automatically opened and closed as the elevator car approaches or recedes from the respective floors through which it passes.

A further obj ect of my invention is to pro: vide means by which the operating devices may perform their functions without detriment to the respective parts and their connections in the event that the gates for any reason would be prevented from opening and closing. t I p p I A furtherobject of the invention is to provide novel means which will permit the elevator car to move in the opposite direction from which it normally moves in the event that any of the operating devices should become disarranged.

I attain these objects by the constructions shown in the accompanying drawings, in which- I i I i Figure 1 is an elevation illustrating my improved apparatus as attached to an elevator, the car of which is shown opposite to one floor. Fig. 2 is a diagrammatical view of some of the operating parts of the same. Fig. 3 is a detail view showing the contacting devices between the elevatorcar and the operating mechanism. Fig. 4 is a detail view of some of the parts illustrated in Fig. 2. Fig. 5 is a side elevation showing one method of attaching the gates to the operating devices. Figs. 6 and 7 are similar views, showing modified forms of the same. i

Like parts are represented by similar. letters of reference in the several views.

1,, In the said drawings, a or represent an ele- At each side of the hatch-way of the elevator are the ordinary supporting posts bb',

in connection with which the usual gates are adapted to operate, either .by a sliding connection, hinged connection, or in any other well-known manner.

At each floor or hatch-way where gates are to be provided a pivoted operating lever c is placed on any suitable support 0', and to the lower end of this lever c is pivoted a vibrating arm 0 This vibrating arm 0 is provided at its other end with a roller c which is adapted to travel in a way a, formed preferably between the guiding post?) and an auxiliary guide 0 attached to and supportedfrom the post 12. This auxiliary guide 0 may be constructed of any suitable material, but the respective ends thereof are formed resilient and are free to yield under an undue press-' ure; the support for this auxiliary guide being such as will enable it to perform its function when occasion requires. The upper end of the operating lever c is provided with a suitable housing, in which is placed a support preferably in the form of a sheave or pulley c Adjacent to the upper end of the lever a, and connected thereto in the manner hereinafter described, is a block or housing (:1, provided with an arm or projection 01'. This housing 03 contains a support preferably in the form of a pulley (2 over which passes a rope or cable 01 which extends downwardly and around the pulley c and is connected to the arm or projection d, of said housing. This rope or cable passes over a stationary pulley or sheave (Z and is provided at itsopposite end'with .a weight d The housing d further contains any suitable number of pulleys 01 one for each gate to be operated around whichare adapted to pass alike number of operating ropes d, which are connected at one end to the respective gates, or the gate other to said shaft; the construction being such that as the rope d is wound or unwound on or from the drum e,theshaft e is revolved so as to wind or unwind the ropes c and thus raise or lower the gate f.

The vibrating arm 0 is constructed at its upper end with an open bearing 0 and the elevator car a is provided with a projecting arm a, adapted, as said elevator car approaches the floor or hatch-way in either direction, to engage in said open bearing and thus carry the free end of said arm with said elevator car for a limited distance, so that a backward and forward motion of the lever c is produced. The parts are so arranged that as the elevator car comes opposite the floor the arm 0 stands in ahorizontal position and the lever c is thus at the limit of its stroke in one direction. As the elevator car proceeds in either direction from the floor, the arm a is carried to an angular position above or below the center as the elevator car moves upwardly or downwardly; the arm beingleftin a position to be engaged by. the elevator car when it returns. Starting with the elevator car level with the floor, the operating lever and its connection being in the position shown in Fig. 1, the gates in an elevated position,- if the elevator car is movedin either direction from this position the upper end of the lever 0' contacts with the projecting arm at of the housing (1, and carries the said housing along with said lever until it reaches the limit of its stroke in the opposite direction. The housing (1 pays out the rope 01 which operates the elevator gate, and thus lowers said gate, the gate being adapted to fall by gravity. At the same time the weight 61 is elevated. Now, if the elevator should contact with the arm in the opposite direction, said arm will be forced against the rope d attached to the weight, and in the event that a greater amount of force is required. to lift the gate, then the lever a will move away from the housing, as shown in Fig. 2; the weight will be elevated while the gate remains stationary. The weight 01 is sufficiently heavy to raise the gate under ordinary conditions, so that, unless the gate is held by some disarrangement, the movement of the lever 0 against the rope or cable (1 willproduce a movement of the housing 01, which will take up the rope d", and thus elevate the gate.

' It is obvious that any number of pulleys may be employed in the housing, and any number of ropes d passing over said pulleys, so that any number of gates may be operated. In Fig. 4E I have illustrated two of such pulleys and ropes, adapted to operate gates on each side of the elevator. In Fig. 6 I have illustrated the rope d 'passing over suitable guiding pulleys and attached directly to the gate f. In Fig. 7 I have shown the same construction with a hinged barf, instead of a gate f. The form of gate forms no part of my invention, as any suitable construction may be used when used in connection with my opparts should become disarranged; the guide 0 being adapted to yield sufficiently to permit of said projection passing through without breaking any of the parts.

A spring 9 is preferably provided in conneotion with the lever c to cause it to return to that position in which the gate is closed, and thus assist in carrying the arm 0 to the limit of its stroke, though, if desired, this spring may be dispensed with, providing the bearing 0 is constructed of such shape as to produce the proper. movement of the arm 0 It will be seen from the above description that I provide operating mechanism for safety elevator gates which is at once simple and at the same time so arranged that a failure of any of the parts to operate, owing to some Obstruction or disarrangement, will not result in any breakage of said operating parts.

It is obvious that my invention herein described may be applied to elevator gates already in use, a suitable number of connections being formed from the operating devices to correspond to the number of gates employed at each hatchway; the particular form and number of gates so operated forming no part of my invention.

Having thus described my invention, I claim 1. The combination with an elevator car, and a movable gate, a vibrating lever operated by said car, and a housing adjacent to said lever, a weight attached to said housing by a flexible connection which passes around a sheave or support in said lever, and means, substantially as described, for connecting said gate to said housing, substantially as specified.

2. The combination with an elevator car and a movable gate, of a vibrating lever, a housing provided with a projection adjacent to said lever and adapted to contact therewith, a weighted rope or cable connected to said housing and passing over suitable supports in said housing and lever, respectively, a connection from said housing to said elevator gate, and means, substantially as described, for vibrating said lever by the move ment of the elevator car, substantially as specified.

3. The combination with an elevator car, and a moving gate, of a vibrating lever, connections from said lever to said gate, a piv-- oted arm connected to said lever, a roller on said arm adapted to operate in suitable ways adjacent to said elevator car, a projection on said car to engage with said arm, and a yielding guide for said roller, substantially as specified, I

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4. The combination with a vibrating lever, and a movable gate, an arm connected to said lever, an elevator car having a projection thereon for operating said arm, a housing adleys or sheaves therein, a projection on said housing to contact with said lever, and a support or pulley in said lover, a weighted rope connected at one end tosaid projection and I passing in opposite directions over the supporting pulleys in said lever and housing, re-

spectively, and a weight on said rope, operating ropes or cables extending over thesup porting pulleys in said housing, and movable gates connected to said ropes or cables, substantially as specified.

6. The combination with an elevator car and a vibrating lever, a pivoted arm connected at one end to said lever, and a spring guide for said arm, a projection on said elevator car to contact with said arm and move the same, a spring connectedto said lever, and means, substantially as described, for connecting said lever to a movable gate, substantially as specified.

In testimony whereof I have hereunto set my hand this 23d day of January, A. D. 1894.

j I WILLIAM J. SLYDER.

I Witnesses:

WALTER S. THoMAs, J. WARREN MEANS. 

